电话xx53xx.com
xx53xx.com 时间:2021-04-07 阅读:()
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage29/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalApplicationGeneralDescriptionTheSE78XXseriesarethreeterminalpositivevoltageregulatorsdesignedforawidevarietyofapplicationsincludinglocal,on-cardregulation.
TheSE78XXiscompletewithinternalcurrentlimiting,thermalshutdownprotection,andsafe-areacompensationwhichmakethemvirtuallyimmunefromoutputoverload.
Ifadequateheatsinkingisprovided,theseregulatorscandeliveroutputcurrentsupto1A.
TheSE78XXareavailableinTO220andTO252packages.
FeaturesOutputCurrentupto1AFixedOutputVoltagesof5V,9Vand12VOutputVoltageAccuracyof±4%overtheFullTemperatureRangeInternalShortCircuitCurrentLimitingInternalThermalOverloadProtectionOutputTransistorSafe-areaProtectionLowLoadRegulationStablePerformanceinHighTemperatureApplicationsIntelligentAmmeterPowerManagementforComputerMotherBoardLCDMonitorandLCDTVPostRegulatorsforSwitchingSuppliesRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage39/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorPinConfigurationTO252TO2201.
IN2.
GND3.
OUT1.
IN2.
GND3.
OUTPinDescriptionNO.
PinNamePinFunctionDescription1INVoltageInput2GNDGround3OUTVoltageOutputFunctionalBlockDiagramRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage49/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorOrderingInformationPartNumberMarkingInformationPackageRemarksSE78QXX-LFSE78XXYYWW-LFTO220XXmeansOutputVoltageYYWWmeansProductionbatchLFmeansLeadFreeSE78JXX-LFSE78XXYYWW-LFTO252SE78QXX-HFSE78XXYYWW-HFTO220XXmeansOutputVoltageYYWWmeansProductionbatchHFmeansHalogenFreeSE78JXX-HFSE78XXYYWW-HFTO252AbsoluteMaximumRatingsSymbolParameterMaximumUnitsVINInputVoltage36VTLEADLeadTemperature(Soldering,10sec)260℃PDPowerDissipationInternalLimitedWTJOperatingJunctionTemperature150℃TSTGStorageTemperatureRange-65~+150℃θJCThermalResistance-JunctiontoCaseTO2205℃/WTO25210θJAThermalResistance-JunctiontoAmbientTO22045℃/WTO25255Note:Absolutemaximumratingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.
Functionaloperationundertheseconditionsisnotimplied.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage59/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristicsSE7805ElectricalCharacteristics(Vcc=10V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C4.
955.
1VIOUT=5mAto1A,VIN=7.
5Vto20V,PD≤15W4.
85.
2LineRegulationVRLINEVIN=7.
5Vto20V,IOUT=500mA,TJ=25°C2550mVLoadRegulationVRLOADVIN=10V,IOUT=5mAto1A,TJ=25°C2050QuiescentCurrentIqVIN=10V,IOUT=03.
26mAQuiescentCurrentChangeIqVIN=8Vto25V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=8Vto18V,f=120Hz,IOUT=500mA70dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz10mShortCircuitCurrentISCVIN=35V,TA=25°C0.
05APeakOutputCurrentIPKVIN=10V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
4mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratings.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage69/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristics(Continue)SE7809ElectricalCharacteristics(Vcc=15V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C8.
8299.
18VIOUT=5mAto1A,VIN=11.
5Vto23V,PD≤15W8.
659.
35LineRegulationVRLINEVIN=11.
5Vto23V,IOUT=500mA,TJ=25°C2590mVLoadRegulationVRLOADVIN=14V,IOUT=5mAto1A,TJ=25°C25100QuiescentCurrentIqVIN=15V,IOUT=03.
26mAQuiescentCurrentChangeIqVIN=11.
5Vto23V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=11.
5Vto21.
5V,f=120Hz,IOUT=500mA61dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz10mShortCircuitCurrentISCVIN=35V,TA=25°C0.
2APeakOutputCurrentIPKVIN=15V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
72mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratings.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage79/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristics(Continue)SE7812ElectricalCharacteristics(Vcc=19V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C11.
751212.
25VIOUT=5mAto1A,VIN=14.
8Vto27V,PD≤15W11.
512.
5LineRegulationVRLINEVIN=14.
8Vto27V,IOUT=500mA,TJ=25°C25120mVLoadRegulationVRLOADVIN=19V,IOUT=5mAto1A,TJ=25°C40120QuiescentCurrentIqVIN=19V,IOUT=03.
46mAQuiescentCurrentChangeIqVIN=14.
8Vto30V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=15Vto25V,f=120Hz,IOUT=500mA60dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz11mShortCircuitCurrentISCVIN=35V,TA=25°C0.
2APeakOutputCurrentIPKVIN=18V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
96mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratingsRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage89/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalPerformanceCharacteristicsPeakOutputCurrentvsInput/OutputDifferentialVoltageOutputVoltagevsJunctionTemperatureOutputVoltagevsOutputCurrentOutputVoltagevsInputVoltageQuiescentCurrentvsJunctionTemperatureRippleRejectionvsFrequencyRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage99/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalPerformanceCharacteristics(Continue)DropoutVoltagevsJunctionTemperaturePowerDissipationvsJunctionTemperatureLineTransient(Conditions:IOUT=500mA,COUT=0.
1μF)LoadTransient(Conditions:CIN=0.
33μF,COUT=0.
1μF)Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage109/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorOutlineDrawingForSE78XX(1)TO252Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage119/4/2012SE78XX1A3-TerminalPositiveVoltageRegulator(2)TO220Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage129/4/2012SE78XX1A3-TerminalPositiveVoltageRegulator联系方式:北京思旺电子技术有限公司–中国总部地址:中国北京市海淀区信息路22号上地科技综合楼B座二层邮编:100085电话:010-82895700/1/5传真:010-82895706SeawardElectronicsCorporation–台湾办事处2F,#181,Sec.
3,MinquanEastRd,Taipei,TaiwanR.
O.
C电话:886-2-2712-0307传真:886-2-2712-0191SeawardElectronicsIncorporated–北美办事处1512CentrePointeDr.
Milpitas,CA95035,USA电话:1-408-821-6600
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage29/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalApplicationGeneralDescriptionTheSE78XXseriesarethreeterminalpositivevoltageregulatorsdesignedforawidevarietyofapplicationsincludinglocal,on-cardregulation.
TheSE78XXiscompletewithinternalcurrentlimiting,thermalshutdownprotection,andsafe-areacompensationwhichmakethemvirtuallyimmunefromoutputoverload.
Ifadequateheatsinkingisprovided,theseregulatorscandeliveroutputcurrentsupto1A.
TheSE78XXareavailableinTO220andTO252packages.
FeaturesOutputCurrentupto1AFixedOutputVoltagesof5V,9Vand12VOutputVoltageAccuracyof±4%overtheFullTemperatureRangeInternalShortCircuitCurrentLimitingInternalThermalOverloadProtectionOutputTransistorSafe-areaProtectionLowLoadRegulationStablePerformanceinHighTemperatureApplicationsIntelligentAmmeterPowerManagementforComputerMotherBoardLCDMonitorandLCDTVPostRegulatorsforSwitchingSuppliesRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage39/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorPinConfigurationTO252TO2201.
IN2.
GND3.
OUT1.
IN2.
GND3.
OUTPinDescriptionNO.
PinNamePinFunctionDescription1INVoltageInput2GNDGround3OUTVoltageOutputFunctionalBlockDiagramRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage49/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorOrderingInformationPartNumberMarkingInformationPackageRemarksSE78QXX-LFSE78XXYYWW-LFTO220XXmeansOutputVoltageYYWWmeansProductionbatchLFmeansLeadFreeSE78JXX-LFSE78XXYYWW-LFTO252SE78QXX-HFSE78XXYYWW-HFTO220XXmeansOutputVoltageYYWWmeansProductionbatchHFmeansHalogenFreeSE78JXX-HFSE78XXYYWW-HFTO252AbsoluteMaximumRatingsSymbolParameterMaximumUnitsVINInputVoltage36VTLEADLeadTemperature(Soldering,10sec)260℃PDPowerDissipationInternalLimitedWTJOperatingJunctionTemperature150℃TSTGStorageTemperatureRange-65~+150℃θJCThermalResistance-JunctiontoCaseTO2205℃/WTO25210θJAThermalResistance-JunctiontoAmbientTO22045℃/WTO25255Note:Absolutemaximumratingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.
Functionaloperationundertheseconditionsisnotimplied.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage59/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristicsSE7805ElectricalCharacteristics(Vcc=10V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C4.
955.
1VIOUT=5mAto1A,VIN=7.
5Vto20V,PD≤15W4.
85.
2LineRegulationVRLINEVIN=7.
5Vto20V,IOUT=500mA,TJ=25°C2550mVLoadRegulationVRLOADVIN=10V,IOUT=5mAto1A,TJ=25°C2050QuiescentCurrentIqVIN=10V,IOUT=03.
26mAQuiescentCurrentChangeIqVIN=8Vto25V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=8Vto18V,f=120Hz,IOUT=500mA70dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz10mShortCircuitCurrentISCVIN=35V,TA=25°C0.
05APeakOutputCurrentIPKVIN=10V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
4mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratings.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage69/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristics(Continue)SE7809ElectricalCharacteristics(Vcc=15V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C8.
8299.
18VIOUT=5mAto1A,VIN=11.
5Vto23V,PD≤15W8.
659.
35LineRegulationVRLINEVIN=11.
5Vto23V,IOUT=500mA,TJ=25°C2590mVLoadRegulationVRLOADVIN=14V,IOUT=5mAto1A,TJ=25°C25100QuiescentCurrentIqVIN=15V,IOUT=03.
26mAQuiescentCurrentChangeIqVIN=11.
5Vto23V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=11.
5Vto21.
5V,f=120Hz,IOUT=500mA61dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz10mShortCircuitCurrentISCVIN=35V,TA=25°C0.
2APeakOutputCurrentIPKVIN=15V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
72mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratings.
Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage79/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorElectricalCharacteristics(Continue)SE7812ElectricalCharacteristics(Vcc=19V;Iout=1A;Tj=25℃unlessotherwisespecified)ParameterSymbolTestConditionsMinTypMaxUnitOutputVoltageVOUTTj=25°C11.
751212.
25VIOUT=5mAto1A,VIN=14.
8Vto27V,PD≤15W11.
512.
5LineRegulationVRLINEVIN=14.
8Vto27V,IOUT=500mA,TJ=25°C25120mVLoadRegulationVRLOADVIN=19V,IOUT=5mAto1A,TJ=25°C40120QuiescentCurrentIqVIN=19V,IOUT=03.
46mAQuiescentCurrentChangeIqVIN=14.
8Vto30V,IOUT=500mA,TJ=25°C0.
30.
8mAIOUT=5mAto1A,TJ=25°C0.
080.
5mARippleRejectionPSRRVIN=15Vto25V,f=120Hz,IOUT=500mA60dBDropoutVoltageVDROPVOUT=1%,IOUT=1A,TJ=25°C2VOutputNoiseVoltageNOUTf=10Hzto100kHz,TA=25°C10uV/VoOutputResistanceROUTf=1KHz11mShortCircuitCurrentISCVIN=35V,TA=25°C0.
2APeakOutputCurrentIPKVIN=18V,TJ=25°C2.
2ATemperatureCoefficientofOutputVoltageVOUT/T0.
96mV/℃(VOUT/VOUT)/T80ppm/℃Note1:Pulsetestingtechniquesareusedtomaintainthejunctiontemperatureasclosetotheambienttemperatureaspossible,andthermaleffectsmustbetakenintoaccountseparately.
Note2:ThisspecificationappliesonlyforDCpowerdissipationpermittedbyabsolutemaximumratingsRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage89/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalPerformanceCharacteristicsPeakOutputCurrentvsInput/OutputDifferentialVoltageOutputVoltagevsJunctionTemperatureOutputVoltagevsOutputCurrentOutputVoltagevsInputVoltageQuiescentCurrentvsJunctionTemperatureRippleRejectionvsFrequencyRev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage99/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorTypicalPerformanceCharacteristics(Continue)DropoutVoltagevsJunctionTemperaturePowerDissipationvsJunctionTemperatureLineTransient(Conditions:IOUT=500mA,COUT=0.
1μF)LoadTransient(Conditions:CIN=0.
33μF,COUT=0.
1μF)Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage109/4/2012SE78XX1A3-TerminalPositiveVoltageRegulatorOutlineDrawingForSE78XX(1)TO252Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage119/4/2012SE78XX1A3-TerminalPositiveVoltageRegulator(2)TO220Rev1.
0Preliminaryandallcontentsaresubjecttochangewithoutpriornotice.
SeawardElectronics,Inc.
,www.
seawardinc.
comPage129/4/2012SE78XX1A3-TerminalPositiveVoltageRegulator联系方式:北京思旺电子技术有限公司–中国总部地址:中国北京市海淀区信息路22号上地科技综合楼B座二层邮编:100085电话:010-82895700/1/5传真:010-82895706SeawardElectronicsCorporation–台湾办事处2F,#181,Sec.
3,MinquanEastRd,Taipei,TaiwanR.
O.
C电话:886-2-2712-0307传真:886-2-2712-0191SeawardElectronicsIncorporated–北美办事处1512CentrePointeDr.
Milpitas,CA95035,USA电话:1-408-821-6600
- 电话xx53xx.com相关文档
- HOLExx53xx.com
- 3.326xx53xx.com
- 1.5174xx53xx.com
- dataxx53xx.com
- obtainxx53xx.com
- Autoxx53xx.com
弘速云（28元/月）香港葵湾2核2G10M云服务器
弘速云怎么样?弘速云是创建于2021年的品牌，运营该品牌的公司HOSU LIMITED(中文名称弘速科技有限公司)公司成立于2021年国内公司注册于2019年。HOSU LIMITED主要从事出售香港vps、美国VPS、香港独立服务器、香港站群服务器等，目前在售VPS线路有CN2+BGP、CN2 GIA，该公司旗下产品均采用KVM虚拟化架构。可联系商家代安装iso系统，目前推出全场vps新开7折，...
10gbiz：香港/洛杉矶CN2直连线路VPS四折优惠,直连香港/香港/洛杉矶CN2四折
10gbiz怎么样?10gbiz在本站也多次分享过，是一家成立于2020的国人主机商家，主要销售VPS和独立服务器，机房目前有中国香港和美国洛杉矶、硅谷等地，线路都非常不错，香港为三网直连，电信走CN2，洛杉矶线路为三网回程CN2 GIA，10gbiz商家七月连续推出各种优惠活动，除了延续之前的VPS产品4折优惠，目前增加了美国硅谷独立服务器首月半价的活动，有需要的朋友可以看看。10gbiz优惠码...
tmhhost：暑假快乐，全高端线路，VPS直接8折，200G高防，美国gia日本软银韩国cn2香港cn2大带宽
tmhhost为2021年暑假开启了全场大促销，全部都是高端线路的VPS，速度快有保障。美国洛杉矶CN2 GIA+200G高防、洛杉矶三网CN2 GIA、洛杉矶CERA机房CN2 GIA，日本软银（100M带宽）、香港BGP直连200M带宽、香港三网CN2 GIA、韩国双向CN2。本次活动结束于8月31日。官方网站：https://www.tmhhost.com8折优惠码：TMH-SUMMER日本...
xx53xx.com为你推荐
-
newworldtheworld中文是什么意思嘉兴商标注册怎么查商标注册日期老虎数码相机里的传感器CCD和CMO是什么意思？地陷裂口地陷前期会有什么征兆吗？冯媛甑冯媛甄多大啊?百度关键词工具如何利用百度关键词推荐工具选取关键词789se.com莫非现在的789mmm珍的com不管了qq530.com求教：如何下载http://www.qq530.com/ 上的音乐www.ijinshan.com好电脑要用什么样的软件www4399com4399是什么网站啊？？？